Collapsible skateboard

ABSTRACT

A collapsible skateboard includes an upright handle having lower portion on which is fixedly mounted a bracket, a connector having a curved slot having a lower end formed with a horizontal recess, an upper end formed with a vertical recess, and a circular hole under the vertical recess, an adjust pin inserted into the vertical recess of the connector and the elongated hole of the bracket, a pivot pin fitted through the circular hole of the connector and the circular hole of the bracket, a spring having an upper end connected to the adjust pin and a lower end to the pivot pin, and a platform on which is fixedly mounted the connector, whereby the skateboard can be easily folded up as desired.

RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No.10/217,123, filed Aug. 13, 2002, scheduled to issue as U.S. Pat. No.7,063,341, which is a continuation of U.S. patent application Ser. No.09/816,311, filed Mar. 26, 2001, now U.S. Pat. No. 6,431,567, U.S.patent application Ser. No. 09/222,840, filed Dec. 30, 1998, now U.S.Pat. No. 6,206,387, the entireties of which are incorporated byreference herein and made a part of the present disclosure.

BACKGROUND OF THE INVENTION

1. Field of the Invention

This invention is related to an improvement in the structure of acollapsible skateboard.

2. Description of the Related Art

The conventional skateboard with an upright handle is fixed in structureso that it is difficult to carry. Hence, a collapsible skateboard hasbeen developed to obviate this drawback. However, such a collapsibleskateboard is complicated in structure and expensive in cost.Furthermore, the handle of the collapsible skateboard cannot be kept ata fixed position, thereby making it inconvenient to use.

SUMMARY OF THE INVENTION

Therefore, it is an object of the present invention to provide animproved collapsible skateboard which can obviate and mitigate theabove-mentioned drawbacks.

This invention is related to an improvement in the structure of acollapsible skateboard.

It is the primary object of the present invention to provide acollapsible skateboard that includes an upright handle having lowerportion on which is fixedly mounted a bracket, a connector having acurved slot having a lower end formed with a horizontal recess, an upperend formed with a vertical recess, and a circular hole under thevertical recess, an adjust pin inserted into the vertical recess of theconnector and the elongated hole of the bracket, a pivot pin fittedthrough the circular hole of the connector and the circular hole of thebracket, a spring having an upper end connected to the adjust pin and alower end to the pivot pin, and a platform on which is fixedly mountedthe connector.

It is another object of the present invention to provide a collapsibleskateboard wherein the connection is a U-shaped member having twoupwardly extending lugs each formed with the curved slot.

It is still another object of the present invention to provide acollapsible skateboard further comprising a control mechanism whichincludes a cylindrical member pivotally mounted on the bracket andhaving an end extending out of the bracket to fixedly connect with alever and a hook extending downwardly within the bracket to engage withthe adjust pin.

It is still another object of the present invention to provide acollapsible skateboard which can be easily folded as desired.

It is a further object of the present invention to provide a collapsibleskateboard which is simple in construction.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a side view of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a perspective view of the present invention;

FIG. 4 is a sectional view of the present invention;

FIG. 5 illustrates the working principle of the present invention; and

FIGS. 6A and 6B illustrate another preferred embodiment of the presentinvention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to FIGS. 1, 2 and 3, the collapsible skateboard according tothe present invention generally comprises an upright handle 4, a bracket5, a connector 3 and a platform 2. The bracket 5 is fixedly mounted onthe handle 4 and provided with two legs 5 extending downwardly towardthe platform 2. Each leg 5 has an elongated hole 51 and a circular hole52 below the elongated hole 51. The connector 3 is formed with twoupwardly extending lugs 30 configured to receive the two legs 5 therein.Each of the lugs 30 has a curved slot 31 formed with a horizontal recess32 at the lower end and a vertical recess 321 at the upper end. Each lug30 is further formed with a circular hole 39 below the vertical recess321. An adjust sin 7 is inserted into the vertical recesses 321 of theconnector 3 and the elongated holes 51 of the bracket 5. A pivot pin 6is fitted through the circular holes 39 of the connector 30 and thecircular holes 52 of the bracket 5 so that the handle 4 together withthe bracket 5 can be folded on the platform 2. A spring S has an upperend S1 connected to the intermediate portion of the adjust pin 7 and alower end connected to the intermediate portion of the pivot pin 6 sothat the adjust pin 7 will be retained within the vertical recess 5321thereby keeping the handle 4 at an upright position.

When desired to fold the skateboard, it is only necessary to move theadjust pin 7 upwardly out of the vertical recesses 321 and then move thehandle 4 together with the bracket 5 toward the platform 2 so that theadjust pin 7 is moved along the curved slots 31 to engage with thehorizontal recesses 32 (see FIG. 5). When in use, simply move the handle4 along the direction away from the platform 2 so that the adjust pin 7is moved along the curved slots 31 to engage with the vertical recesses321.

FIGS. 6A and 6B illustrate another preferred embodiment of the presentinvention. As shown, a control mechanism 8 is pivotally mounted on thebracket 5 and arranged above the adjust pin 7. The control mechanism 8includes a cylindrical member pivotally mounted on the bracket 5 andhaving an end extending out of the bracket 5 to fixedly connect with alever 8 and a hook 81 extending downwardly within the bracket 5 toengage with the adjust pin 7, so that the adjust pin 7 can be movedupwardly out 5 of the vertical recesses 321 by turning the lever 8thereby enabling the handle 4 to fold on the platform 2 as desired.

Other objects of the invention will in part be obvious and in parthereinafter pointed out.

The invention accordingly consists of features of constructions andmethod, combination of elements, arrangement of parts and steps of themethod which will be exemplified in the constructions and methodhereinafter disclosed, the scope of the application of which will beindicated in the claims following.

1. A collapsible skateboard comprising: a platform having front and rearends, said platform having a rear wheel mounted at said rear end; aconnector mounted along said front end of said platform, said connectorformed with a surface having a first recess and a second recess; anupright handle having top and bottom ends, said upright handle having afront wheel mounted at said bottom end; a bracket coupled to saidupright handle and extending toward said platform, said upright handlebeing rotatable within said bracket for providing a steering mechanism;a pivot pin coupled to said connector and extending through said bracketfor enabling said upright handle to fold towards said platform; anadjust pin slidably coupled to said bracket and insertable into saidfirst recess for locking said upright handle in a folded position andinto said second recess for locking said upright handle in an operableposition; a biasing apparatus for urging said adjust pin toward saidpivot pin and into said first or second recess; and a control mechanismadapted for moving said adjust pin independently of said bracket andsaid connector to release said adjust pin from said first or secondrecess.
 2. The collapsible skateboard of claim 1, wherein said surfaceof said connector is formed with a curved surface.
 3. The collapsibleskateboard of claim 1, wherein said surface of said connector is formedwith a straight surface.
 4. A collapsible skateboard comprising: aplatform having front and rear ends, said platform having a rear wheelmounted at said rear end; an upright handle having top and bottom ends,said upright handle having a front wheel mounted at said bottom end; abracket coupled to said upright handle and extending toward saidplatform, said upright handle being rotatable within said bracket forproviding a steering mechanism; a pivot pin for pivotally coupling saidbracket to said platform; a connector mounted along said front end ofsaid platform, said connector formed with a surface having first andsecond recesses, said first and second recesses extending from saidsurface toward said pivot pin; an adjust pin slidable along said surfaceand movable toward said pivot pin for insertion into said first recessfor locking said upright handle in a collapsed position and into saidsecond recess for locking said upright handle in an operable position,said adjust pin being movable away from said pivot pin for releasingsaid adjust pin from said first or second recess, thereby allowing saidbracket to pivot relative to said platform; a biasing apparatus coupledto said skateboard for maintaining said adjust pin in said first orsecond recess; and a control mechanism disposed along on said bracketand coupled to said adjust pin, wherein said control mechanism isconfigured for moving said adjust pin independently of said bracket andsaid connector for releasing said adjust pin from said first or secondrecess.
 5. A collapsible skateboard, comprising: a platform having frontand rear ends, said platform having a rear wheel mounted at said rearend; an upright handle having top and bottom ends, said upright handlehaving a front wheel mounted at said bottom end and a grip portion atsaid top end; a bracket coupled to said upright handle and extendingtoward said front end of said platform, said upright handle beingrotatable within said bracket for providing a steering mechanism; apivot pin for pivotally coupling said bracket to said front end of saidplatform; a connector mounted along said front end of said platform,said connector formed with a surface having first and second recesses;an adjust pin coupled to said bracket and slidable toward said pivot pinfor insertion into said first or second recess; a biasing apparatus forurging said adjust pin toward said pivot pin and into said first orsecond recess; and a control mechanism connected to said adjust pin forselectively releasing said adjust pin from said first or second recess;wherein said control mechanism and said adjust pin are independentlymovable relative to said bracket and said connector, and wherein saidadjust pin is insertable into said first recess for locking said uprighthandle in a collapsed position, and wherein said adjust pin isinsertable into said second recess for locking said upright handle in anoperable position.